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make initialization of connection pool thread save on MSVC

(cherry picked from commit c550af2 and 1e96813)
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jef-n committed May 31, 2015
1 parent b97d46c commit daa909ff4b885a44b575bfe8210b35fcb276ee55
@@ -16,21 +16,11 @@
#include "qgspostgresconnpool.h"
#include "qgspostgresconn.h"

QgsPostgresConnPool QgsPostgresConnPool::sInstance;

QgsPostgresConnPool* QgsPostgresConnPool::instance()
{
static QgsPostgresConnPool *sInstance = 0;

if ( !sInstance )
{
static QMutex m;
m.lock();
if ( !sInstance )
sInstance = new QgsPostgresConnPool();
m.unlock();
}

return sInstance;
return &sInstance;
}

QgsPostgresConnPool::QgsPostgresConnPool() : QgsConnectionPool<QgsPostgresConn*, QgsPostgresConnPoolGroup>()
@@ -17,7 +17,6 @@
#define QGSPOSTGRESCONNPOOL_H

#include "qgsconnectionpool.h"

#include "qgspostgresconn.h"


@@ -66,6 +65,8 @@ class QgsPostgresConnPool : public QgsConnectionPool<QgsPostgresConn*, QgsPostgr
private:
QgsPostgresConnPool();
~QgsPostgresConnPool();

static QgsPostgresConnPool sInstance;
};


@@ -15,9 +15,9 @@

#include "qgsspatialiteconnpool.h"

QgsSpatiaLiteConnPool QgsSpatiaLiteConnPool::sInstance;

QgsSpatiaLiteConnPool* QgsSpatiaLiteConnPool::instance()
{
static QgsSpatiaLiteConnPool sInstance;
return &sInstance;
}
@@ -17,7 +17,6 @@
#define QGSSPATIALITECONPOOL_H

#include "qgsconnectionpool.h"

#include "qgsspatialiteconnection.h"

inline QString qgsConnectionPool_ConnectionToName( QgsSqliteHandle* c )
@@ -56,9 +55,9 @@ class QgsSpatiaLiteConnPoolGroup : public QObject, public QgsConnectionPoolGroup
/** SpatiaLite connection pool - singleton */
class QgsSpatiaLiteConnPool : public QgsConnectionPool<QgsSqliteHandle*, QgsSpatiaLiteConnPoolGroup>
{
static QgsSpatiaLiteConnPool sInstance;
public:
static QgsSpatiaLiteConnPool* instance();

};


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